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One presidential memorandum called for the U.S.'s withdrawal from the Trans-Pacific Partnership, fulfilling a promise made on the campaign trail in a move he says will help American businesses.

"Great thing for the American worker, what we just did," Trump said as he signed that presidential memorandum at the Resolute desk in the Oval Office.

The next presidential memorandum he signed was a hiring freeze on all federal workers "except for military," he said.

The final presidential memorandum of the morning was a reaffirmation of an existing law that bans federal funding for foreign nongovernmental organizations that promote or pay for abortions.

Trump previously said that he considers today his first "real" workday after Friday's inauguration, though he did do some business over the weekend. He made a trip to the CIA on Saturday, addressing members of the intelligence community, and then swore in his senior staff on Sunday.

In a video message two weeks after his election, Trump pledged that on "Day One" he would take the following actions:

White House press secretary Sean Spicer will hold his first official press briefing with members of the press corps, after he blasted the media Saturday in his first press room statement, accusing news organizations of falsely reporting the size of crowds at the Jan. 20 inauguration and intentionally framing photographs to "minimize the enormous support" of those in attendance.

Editor's Note: The White House has since clarified that this morning's actions were technically "presidential memorandums," not "executive orders," as they were previously indicated on the president's public schedule and referred to in this story. This story has been updated accordingly.